Antifreeze and fire protecting device



July 9, 1929. w j OCQNNOR 1,720,140

A NTIFREEZE AND FIRE PROTECTING DEVICE Filed April 28 1928 2Sheets-Sheet 1 l/al/(h/ 070272702 INVENTOR wmwzss: ATTORNEY y 9, 1929- Iw. J. OCONNOR 1.720.140

ANTIFREEZE AND FIRE PROTECTING DEVICE Filed April 28. 1928 2Sheets-Sheet 2 INVENTOR %& I M i O ATTORNEY PATENT OFFICE.

WALTER J. OCONNOR, OF PITTSBURGH, PENNSYLVANIA.

ANTIFBEEZE AND FIRE PROTECTING DEVICE.

Application filed April 2a, 1928. Serial No. 273,638.

i '15 specifically pointed out in the appended claims.

In describing my invent-ion in detail, reference will be had to theaccompanying "drawings wherein like characters denote like orcorresponding parts throughout the several views, and in which Figure 1is a diagrammatic plan view showing the invention applied to anaeroplane.

Figure 2 is a view showing how the pipe may be moved to spray materialeither upon the top surface or the under surface of the wing of theaircraft;

Figure 3 is a detail view of the spray device and its attached parts.

Figure 4 is a transverse sectional view through the spray device.

Figure 5 is a section on line 5-5 of Figure 4.

Figure 6 is a section on line 66 of F igure 4:.

Figure 7 is a diagrammatic view of the arrangement of the tanks andpipes.

Figure 8 is a view of the ring-shaped spray device adapted to be placedover the nose' of the fuselage. Figure 9 is a view showing amodification.

In these views, 1 indicates a spray pipewhich is arranged at the tip ofthe wing A of the aircraft, brackets 2 being fastened to the tip atintervals and having the arms 4 pivoted thereto, each arm being formedon a ring 5 which encircles a part of the tube 1,

the tube being provided with collars 6 which receive each ring 5 betweenthem. A handle 7 is connected with the tube 1 so that the tube can bemoved from a position shown in full lines in Figure 2, where it willspray the top of the wing, to a position it occupies in dotted lines inFigure 2, where it will spray the under surface of the wing.

A spray tube 8 encircles the nose of the fuselage B of the plane so thatthe major portion of the fuselage can be sprayed from this tube. The twotubes are connected by the flexible tubes 9 to a pipe line 10, one endof which is connected with a tank 11 and the other end with a tank 12-.A compressed air device 13 is connected by the pipes 11 with both tanksso that compressed air can be delivered to either tank from the device.Valves 15 are arranged in the pipe line 10 so that the material fromeither tank 11 or tank 12 can be allowed to escape through the spraytubes while the material in the opposite tank cannot pass into saidtubes.

I prefer to make the spray tubes as shown in Figures 3, 4, 5 and 6. Asshown in these views, each spray device comprises an outer member 1 andan inner member 1 which.

are spaced apart and which are connected together by the pins 16. Theouter member is provided with the elongated slits 17 having their endsrounded, as at 18, and the inner member is provided with the oblongopenings 19. The material to be sprayed is conducted into the innermember from which it passes through the openings 19 into the outermember and then it will pass from the outer members through the slits17.

One of the tanks should contain an antifreeze mixture so that when thematerial from this tank is sprayed over the parts of the aircraft, theaccumulation of ice thereon will be prevented. The other tank is tocontain a fire extinguishing liquid so that if a fire should break out,the contents of this tank can be sprayed over the plane to extinguishthe fire.

Figure 9 shows the spray tube 1 inserted in the entering edge of thewing instead of being attached to the exterior thereof, as

shown in the other views, It will, of course,

be understood that the spray device may be placed on any desired part ofthe wing and that a number of these devices may be used to prevent icefrom collecting on the g and to extinguish fire if the wing should catchon fire.

It is thought from the foregoing description that the advantages andnovel features of my invention will be readily apparent.

It is to be understood that I may make changes in the construction andin the combination and arrangement of the several parts, provided thatsuch changes fall with in the scope of the appended claims.

What I claim is 1. In an aeroplane, a spray pipe arranged at the tip ofthe wing thereof, means for forcing either a fire extinguishing liquidthrough said pipe or an anti-freeze liquid and manually operated meansfor moving the pipe so as to spray the liquid upon either the topsurface or the under surface of the wing.

2. In an aeroplane, a spray pipe arranged at the tip of the wingthereof, means for forcing either a fire extinguishing liquid throughsaid pipe or an anti-freeze liquid. manually operated means for movingthe pipe so as to spray the liquid upon either the top surface or theunder surface of the wing, a spray pipe encircling a part of thefuselage and means for forcing either an antifreeze liquid or a fireextinguishing liquid through the same.

3. In an aeroplane, a spray pipe arranged at the tip of the wingthereof, means for forcing either a fire extinguishing liquid throughsaid pipe or an anti-freeze liquid, manually operated means for movingthe pipe so as to spray the liquid upon either the top surface or theunder surface of the Wing, a spray pipe encircling a part of thefuselage, means for forcing either an antifreeze liquid or a fireextinguishing liquid through the same, each spray pipe comprising anouter member having slits therein, an inner member spaced from the outermember and having openings therein and means for connecting the innermember with the liquid to be sprayed.

4. In an aeroplane, a pair of tanks, one

containing an anti-freezing mixture and the other a fire extinguishingmixture, means for supplying compressed air to both tanks, a spray pipepivotally connected with the tip of the wing of the aeroplane, a spraypipe surrounding a part of the body of the plane, a pipe line connectingthe two tanks together, a pipe connecting the central part of the pipeline with the two spray pipes and a pair of valves in the pipe line, oneon each side of the center thereof.

In testimony whereof I affix my signature.

WALTER J. OCONNOR.

